In the Oracle Enterprise Management you can create alerts for users. This alerts can be OS_BASED (using scripts) or SQL_BASED (using PL/SQL queries). In this post I will show an example about this alerts. OS_BASED: For to do an alert using scripts , before you must do a script to put it in the OEM metrics. Then, I will use a script from Oracle’s Documentation: #!/usr/bin/perl # Description: 5-min load average. # Sample User Defined Event monitoring script. $ENV{PATH} = “/bin:/usr/bin:/usr/sbin”; $DATA = `uptime`; $DATA =~ /average:s+([.d]+),s+([.d]+),s+([.d]+)s*$/; if (defined $2)…